sensors Mode-S transponder
A65800
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N508DN · AIRBUS A-350-900 · operated by DELTA AIR LINES INC
- Hex
- A65800
- Octal
- 51454000
- Decimal
- 10,901,504
- Country
- US
- Tail
- N508DN
- Type
- A359
- Flights observed
- 112
- Distinct callsigns
- 20
- Country
- US
- Last broadcast
- 2d ago
Last known position
Country allocation
The ICAO 24-bit address A65800 falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.
Callsign history 20 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| DAL69 | Delta Air Lines | 14 | 2026-05-18 |
| DAL68 | Delta Air Lines | 12 | 2026-05-19 |
| N508DN | - | 10 | 2026-05-10 |
| DAL388 | Delta Air Lines | 9 | 2026-05-24 |
| DAL197 | Delta Air Lines | 8 | 2026-05-19 |
| DAL172 | Delta Air Lines | 7 | 2026-05-20 |
| DAL389 | Delta Air Lines | 6 | 2026-04-24 |
| DAL281 | Delta Air Lines | 6 | 2026-05-23 |
| DAL196 | Delta Air Lines | 6 | 2026-05-22 |
| DAL274 | Delta Air Lines | 5 | 2026-05-25 |
| DAL173 | Delta Air Lines | 5 | 2026-05-21 |
| DAL280 | Delta Air Lines | 4 | 2026-04-25 |
| DAL275 | Delta Air Lines | 4 | 2026-05-24 |
| DAL167 | Delta Air Lines | 4 | 2026-05-08 |
| DAL9960 | Delta Air Lines | 3 | 2026-05-10 |
| DAL120 | Delta Air Lines | 3 | 2026-05-09 |
| DAL26 | Delta Air Lines | 2 | 2026-05-27 |
| DAL8 | Delta Air Lines | 1 | 2026-05-03 |
| DAL7 | Delta Air Lines | 1 | 2026-05-07 |
| DAL166 | Delta Air Lines | 1 | 2026-05-08 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-27 | DAL26 | ICN → ATL | May 27, 10:10 UTC | May 27, 12:00 UTC | 1h 50m |
| 2026-05-27 | DAL26 | ICN → ATL | May 27, 10:08 UTC | May 27, 23:44 UTC | 13h 36m |
| 2026-05-26 | DAL159 | DTW → ICN | May 26, 16:59 UTC | May 27, 06:55 UTC | 13h 56m |
| 2026-05-25 | DAL274 | ATL → CDG | May 25, 11:59 UTC | May 26, 00:04 UTC | 12h 5m |
| 2026-05-25 | DAL274 | ATL → CDG | May 25, 12:00 UTC | May 25, 19:59 UTC | 7h 59m |
| 2026-05-24 | DAL275 | DTW → HND | May 24, 18:15 UTC | May 25, 06:10 UTC | 11h 55m |
| 2026-05-24 | DAL388 | SFO → JFK | May 24, 03:25 UTC | May 24, 15:20 UTC | 11h 55m |
| 2026-05-23 | DAL388 | SFO → JFK | May 23, 10:05 UTC | May 24, 04:50 UTC | 18h 46m |
| 2026-05-23 | DAL281 | SEA → PVG | May 23, 08:30 UTC | May 24, 04:50 UTC | 20h 21m |
| 2026-05-23 | DAL281 | SEA → PVG | May 23, 04:05 UTC | May 24, 04:00 UTC | 23h 56m |
| 2026-05-22 | DAL281 | SEA → PVG | May 22, 23:50 UTC | May 23, 10:05 UTC | 10h 15m |
| 2026-05-22 | DAL281 | SEA → PVG | May 22, 23:45 UTC | May 23, 11:13 UTC | 11h 28m |
| 2026-05-22 | DAL196 | ICN → SEA | May 22, 10:25 UTC | May 22, 12:00 UTC | 1h 35m |
| 2026-05-22 | DAL196 | ICN → SEA | May 22, 10:20 UTC | May 22, 19:33 UTC | 9h 13m |
| 2026-05-21 | DAL173 | MXP → JFK | May 21, 17:50 UTC | May 22, 06:10 UTC | 12h 20m |
| 2026-05-20 | DAL172 | MNL → JFK | May 20, 10:45 UTC | May 20, 21:00 UTC | 10h 15m |
| 2026-05-20 | DAL172 | MNL → JFK | May 20, 10:41 UTC | May 20, 20:58 UTC | 10h 17m |
| 2026-05-19 | DAL197 | SEA → ICN | May 19, 20:25 UTC | May 20, 06:00 UTC | 9h 36m |
| 2026-05-19 | DAL197 | SEA → ICN | May 19, 20:25 UTC | May 20, 07:54 UTC | 11h 29m |
| 2026-05-19 | DAL68 | TPE → SEA | May 19, 02:10 UTC | May 19, 12:35 UTC | 10h 25m |
| 2026-05-19 | DAL68 | TPE → SEA | May 19, 02:07 UTC | May 19, 12:29 UTC | 10h 22m |
| 2026-05-18 | DAL69 | SEA → TPE | May 18, 10:25 UTC | May 18, 10:50 UTC | 25m |
| 2026-05-17 | DAL69 | SEA → TPE | May 17, 23:18 UTC | May 18, 10:52 UTC | 11h 34m |
| 2026-05-17 | DAL69 | SEA → TPE | May 17, 23:20 UTC | May 18, 09:10 UTC | 9h 50m |
| 2026-05-17 | DAL196 | ICN → SEA | May 17, 10:00 UTC | May 17, 19:10 UTC | 9h 10m |
| 2026-05-16 | DAL173 | MXP → JFK | May 16, 22:20 UTC | May 17, 06:05 UTC | 7h 45m |
| 2026-05-16 | DAL172 | MNL → JFK | May 16, 11:28 UTC | May 16, 22:04 UTC | 10h 36m |
| 2026-05-16 | DAL173 | MXP → JFK | May 16, 17:40 UTC | May 17, 06:05 UTC | 12h 25m |
| 2026-05-15 | DAL172 | MNL → JFK | May 15, 10:40 UTC | May 15, 21:45 UTC | 11h 4m |
| 2026-05-14 | DAL197 | SEA → ICN | May 14, 20:25 UTC | May 15, 06:25 UTC | 10h 0m |
| 2026-05-14 | DAL68 | TPE → SEA | May 14, 03:45 UTC | May 14, 12:20 UTC | 8h 35m |
| 2026-05-14 | DAL68 | TPE → SEA | May 14, 02:16 UTC | May 14, 12:16 UTC | 10h 0m |
| 2026-05-14 | DAL68 | TPE → SEA | May 14, 02:20 UTC | May 14, 02:35 UTC | 15m |
| 2026-05-13 | DAL69 | SEA → TPE | May 13, 10:50 UTC | May 13, 11:10 UTC | 20m |
| 2026-05-12 | DAL69 | SEA → TPE | May 12, 23:30 UTC | May 13, 09:15 UTC | 9h 45m |
| 2026-05-12 | DAL69 | SEA → TPE | May 12, 23:27 UTC | May 13, 11:14 UTC | 11h 47m |
| 2026-05-12 | DAL196 | ICN → SEA | May 12, 10:15 UTC | May 12, 19:55 UTC | 9h 40m |
| 2026-05-11 | DAL197 | SEA → ICN | May 11, 21:40 UTC | May 12, 08:05 UTC | 10h 25m |
| 2026-05-10 | DAL9960 | JFK → ATL | May 10, 21:54 UTC | May 11, 01:05 UTC | 3h 10m |
| 2026-05-10 | DAL9960 | JFK → ATL | May 10, 21:04 UTC | May 10, 21:10 UTC | 5m |
| 2026-05-10 | DAL9960 | JFK → ATL | May 10, 19:24 UTC | May 10, 19:30 UTC | 5m |
| 2026-05-10 | N508DN | MSP → MSP | May 10, 18:29 UTC | May 10, 18:35 UTC | 5m |
| 2026-05-10 | N508DN | MSP → MSP | May 10, 17:10 UTC | May 10, 17:15 UTC | 5m |
| 2026-05-10 | N508DN | MSP → MSP | May 10, 16:34 UTC | May 10, 16:40 UTC | 5m |
| 2026-05-10 | N508DN | MSP → MSP | May 10, 15:55 UTC | May 10, 16:00 UTC | 5m |
| 2026-05-10 | N508DN | MSP → MSP | May 10, 14:14 UTC | May 10, 14:20 UTC | 5m |
| 2026-05-10 | N508DN | MSP → MSP | May 10, 13:14 UTC | May 10, 13:19 UTC | 5m |
| 2026-05-10 | N508DN | MSP → MSP | May 10, 12:44 UTC | May 10, 12:59 UTC | 15m |
| 2026-05-10 | N508DN | MSP → MSP | May 10, 08:40 UTC | May 10, 08:45 UTC | 5m |
| 2026-05-10 | N508DN | MSP → MSP | May 10, 07:50 UTC | May 10, 07:55 UTC | 5m |
About Mode-S
A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.
Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.
Prefer a tail-number view? See the N508DN page for operator, model, and routing details .